differing viewpoints is natural, as is learning.

just allowing some uninformed people to continue with some beliefs is where some people go radicalised and want to incite violence because they believe their uninformed belief is so strong that they will get angry with anyone who defies their opinion.
(the type of people that have never been taught the word no, until its too late)
we shouldnt let some people just continue with that viewpoint, we should educate them using data and facts to try to de-radicalise them and make them see sense and a place of open-mindedness, consideration, and teach them to research, understand and process information better, to make better decisions. instead of insisting on their closed mindedness and pretending no one should debate or oppose them